The manual doesn’t mention any accessory ports so the interface will have to be through the mic. Luckily it has the audio output so it’s going to be a single connector on the transceiver side. Not so lucky is the lack of the hardware PTT line. The mic appears to use serial communication for that and other functions. The protocol will have to be sniffed out and implemented in the software.
I took a crack at a diagram here just to help my soldering effort this evening - Does that about right?
It is disarming to have no PTT… unless… that 8:RST is really supposed to be RTS :-) I suppose I could ground the center pin and see it it transmits or resets…
Haven’t heard any reports or evidence of this working have you @K0TX ?
RST is likely a reset of serial connection or something like that. With no hardware PTT line provided it is possible that keying up of the radio is done via a command over the serial connection. This is common with the advanced keypad mics with Anytone AT-D578 being a case in point. See if you can dig up any more information on this. In case of Anytone, the radio can be switched to using one of the serial lines as a hardware PTT.
So far I didn’t get any reports for this transceiver.
I suppose I could ground the center pin and see it it transmits or resets…